Rollable fire-rated expansion joint

Abstract

A rollable fire-rated expansion joint comprising at least two heat resistant surfaces, at least two screens, each screen coupling together the at least two heat resistant surfaces, the coupled surfaces and screens defining the circumference of at least one cavity, and an insulator located within the at least one cavity.

What is claimed is: 
     
       1. A flexible fire-rated expansion joint comprising: at least one cavity defined by at least two flexible, non-wire mesh, heat resistant surfaces and at least two screens;   wherein each screen is coupled together with two of the at least two flexible, non-wire mesh, heat resistant surfaces, and   an insulator located within the at least one cavity.   
     
     
       2. The rollable fire-rated expansion joint of claim 1 wherein the at least two heat resistant surfaces are substantially parallel to each other, and the at least two screens are substantially parallel to each other. 
     
     
       3. The rollable fire-rated expansion joint of claim 2 wherein at least one of the at least two heat resistant surfaces is corrugated, the corrugations being substantially perpendicular to the at least two screens. 
     
     
       4. The rollable fire-rated expansion joint of claim 1 wherein one of the at least two heat resistant surfaces is narrower than a second of the at least two heat resistant surfaces and the edges of the second heat resistant surface extend beyond the edges of the first heat resistant surface. 
     
     
       5. The rollable fire-rated expansion joint of claim 1 wherein at least one of the at least two heat resistant surfaces comprises elongated resistance welds. 
     
     
       6. The rollable fire-rated expansion joint of claim 5 wherein the welds are substantially parallel to the at least two screens. 
     
     
       7. The rollable fire-rated expansion joint of claim 1 further comprising a crease in the joint, the crease extending through the at least two fire resistant surfaces and the insulator. 
     
     
       8. The rollable fire-rated expansion joint of claim 1 wherein at least one of the at least two heat resistant surfaces comprises at least one layer of stainless steel foil. 
     
     
       9. The rollable fire-rated expansion joint of claim 1 wherein at least one of the at least two screens comprises stainless steel wire.